The Geshrinari Shipyards Plasma Drive is a lower end propulsion system, first used on the Ge-T5-1a Cho-Class Shuttle it became available in YE 34.
Geshrinari Shipyards manufactures Compact Plasma Drives for their designs that need sub-light engines. These engines are simpler, smaller versions of the Geshrinari Turbo Plasma Drive. They designed for lower end aerospace vehicles. Functionally the same, but smaller and with a lower thrust output.